公开(公告)号：JP2001348222A

公开(公告)日：2001-12-18

申请号：JP2001019340

申请日：2001-01-29

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  KAIBEL GERD DR ,  TRAGUT CHRISTIAN ,  ANKEN GABRIELE

IPC: B01D3/14 ,  C01C1/02

Abstract: PROBLEM TO BE SOLVED: To provide a method of obtaining high purity ammonia practically and inexpensively by the distillation of unpurified ammonia. SOLUTION: The method is performed by using a distillation apparatus composed of either a dividing wall column or a thermally combination coupled distillation column and fractionating the unpurified ammonia with a continuous operation to obtain a fraction of low boiling point components, a fraction of high boiling point components and a fraction of a purified component showing intermediate boiling point, the fraction of the low boiling point components is discharged from the top of the distillation column, the fraction of the pure component showing the intermediate boiling point is collected from a column side discharge part and the high purity ammonia is obtained by the method capable of controlling the quantity of the gases in the distillation column so that operation pressure is 2-30 bar and the F-factor does not exceed 2.0 Pa0.5.

公开(公告)号：ES2214352T3

公开(公告)日：2004-09-16

申请号：ES01102139

申请日：2001-02-01

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ DR ,  KAIBEL GERD DR ,  TRAGUT CHRISTIAN ,  ANKEN GABRIELE

IPC: B01D3/14 ,  C01C1/02

Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa 0.5 .

公开(公告)号：DE50101248D1

公开(公告)日：2004-02-05

申请号：DE50101248

申请日：2001-02-01

Applicant: BASF AG

Inventor： WOSTBROCK DR ,  KAIBEL DR ,  TRAGUT CHRISTIAN ,  ANKEN GABRIELE

IPC: B01D3/14 ,  C01C1/02

Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa 0.5 .

公开(公告)号：AT257125T

公开(公告)日：2004-01-15

申请号：AT01102139

申请日：2001-02-01

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ DR ,  KAIBEL GERD DR ,  TRAGUT CHRISTIAN ,  ANKEN GABRIELE

IPC: B01D3/14 ,  C01C1/02

Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa 0.5 .

公开(公告)号：DE10004311A1

公开(公告)日：2001-08-02

申请号：DE10004311

申请日：2000-02-01

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  KAIBEL GERD ,  TRAGUT CHRISTIAN ,  ANKEN GABRIELE

IPC: B01D3/14 ,  C01C1/02

Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa 0.5 .